Indigo for Hair - Henna Sooq Natural Color to Dye Hair Brown to Black Tones. I used this in combination with Henna Powder to dye my hair and cover Gray's. Indigo Powder is used to naturally dye hair a brown to black tone (when used with henna). Plant based and permanent hair dye. Our best seller for resistant hair and grays. I no longer dye my hair and have 5 sealed bags of Indigo to sell. Please note the manufacturer date of July 2020 and the expiration date of June 2023. I have 5 bags available, and volume discounts are available 😊